Locard's Exchange Principle is an exact quote used by Locard.

• A. True
• B. False
• C. Not supported by his writings
• D. Only applies to homicide cases

Answer: (B)

The idea being tested is whether that well-known line is a verbatim statement from Locard himself. Locard did describe that when two objects come into contact, material is exchanged and traces are left behind. However, the exact English sentence “every contact leaves a trace” is not a direct quote from his writings; it’s a popular paraphrase or summary of his concept that has been widely attributed to him. So the statement is not true in the sense of being a literal quotation from Locard. The principle itself applies broadly to all crimes and evidence collection, not just homicide, and his writings support the idea of transfer during contact even if they don’t use that precise wording.